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Audio System: Inspection

SYMPTOM SPECIFICATION

Symptom Repair order
No power coming in. (No display and no sound from speakers)
  1. Check the fuse and power supply for audio.
  2. Check the audio ground.
  3. Remove the audio and repair it.
A specific speaker does not operate.
  1. Check the speaker.
  2. Check the output circuit between audio and speaker.
Audio generates noise with engine running.
  1. Check the audio ground.
  2. Check the generator.
  3. Check the ignition coil.
  4. Remove the audio and repair it.
AM and FM modes are weak or noisy.
  1. Check the antenna.
  2. Check the antenna amplifier.
  3. Check the noise suppressor.
  4. Check the audio ground.
  5. Remove the audio and repair it.
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